CHANDRA DETECTION OF A PARSEC SCALE WIND IN THE BROAD-LINE RADIO GALAXY 3C 382
- Astrophysics Group, School of Physical and Geographical Sciences, Keele University, Keele, Staffordshire ST5 5BG (United Kingdom)
- NASA/GSFC, Code 662, Greenbelt, MD 20771 (United States)
- University of Leicester, Department of Physics and Astronomy, University Road, Leicester LE1 7RH (United Kingdom)
- Department of Astronomy and Astrophysics and Center for Gravitational Wave Physics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States)
We present unambiguous evidence for a parsec scale wind in the broad-line radio galaxy 3C 382, the first radio-loud active galactic nucleus, with R{sub L} = log{sub 10}(f{sub 5GHz}/f{sub 4400})>1, whereby an outflow has been measured with X-ray grating spectroscopy. A 118 ks Chandra grating (HETG) observation of 3C 382 has revealed the presence of several high ionization absorption lines in the soft X-ray band, from Fe, Ne, Mg, and Si. The absorption lines are blueshifted with respect to the systemic velocity of 3C 382 by -840 {+-} 60 km s{sup -1} and are resolved by Chandra with a velocity width of {sigma} = 340 {+-} 70 km s{sup -1}. The outflow appears to originate from a single zone of gas of column density N{sub H} = 1.3 x 10{sup 21} cm{sup -2} and ionization parameter log({xi}/erg cm s{sup -1}) = 2.45. From the above measurements we calculate that the outflow is observed on parsec scales, within the likely range from 10to1000 pc, i.e., consistent with an origin in the narrow-line region.
- OSTI ID:
- 21335997
- Journal Information:
- Astrophysical Journal (Online), Vol. 702, Issue 2; Other Information: DOI: 10.1088/0004-637X/702/2/L187; Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-4357
- Country of Publication:
- United States
- Language:
- English
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